Các tùy chọn an toàn nhất là chỉ đơn giản là để sử dụng chế độ mặc định Encoding chọn. Nếu máy tính của bạn là rất nhanh (2 GHz hoặc nhanh hơn bộ xử lý), bạn có thể chụp hiệu quả hơn với Mã hóa trong lựa chọn thời gian thực. | Chapter 10 Working with Audio Jn This Chapter Understanding audio tracks Adjusting volume levels with rubberbands Adding sound effects to your movie Working with SmartSound s we rush to trim video clips create transitions and add some cool special effects to our movies it s easy to overlook the audio portion of the project. But the audio portion of a movie is nearly as important or as important depending on whom you ask as the video picture. In Chapter 7 I show you how to record better audio and import it into your computer. This chapter shows you how to make good use of that audio in your movie projects. Most movie-editing programs also come with built-in sound effects and other audio tools so I show you how to use those as well. Finally I also help you choose effective musical soundtracks for your movies. If you don t have your own material to work with you can still follow along with the steps in this chapter using the Chapter 10 sample clips found on the CD-ROM that accompanies this book. See Appendix A for more on accessing and using the companion CD-ROM. Using Audio in a Project Most movie-editing programs follow similar patterns. They all use storyboards and timelines for assembling the project and most programs have similar windows for organizing and previewing clips. You ll also find that most programs have a lot in common when it comes to editing audio. For example even the most affordable editing programs usually have separate audio tracks in the timeline for background music narration or sound effects and the audio that accompanies the video clips in the timeline. Audio tracks are described in greater detail in the next section. 186 Part III Editing Your Movie Many movie-editing programs can also show audio waveforms. A waveform is a line that graphically represents the rising and falling level of sound in an audio clip. Figure 10-1 shows the waveform for some narration I recorded in .